Each custom log handler defined in standalone adds a root log4j console appender -------------------------------------------------------------------------------- Key: JBLOGGING-101 URL: https://issues.jboss.org/browse/JBLOGGING-101 Project: JBoss Logging Issue Type: Bug Security Level: Public(Everyone can see) Components: jboss-logging-log4j Reporter: John L Assignee: James Perkins JBoss 7.1.3 Logging custom handlers which are used to wrap existing log4j handlers into jboss logging handlers calls org.jboss.as.logging.handlers.custom.PropertiesConfigurator which calls org.apache.log4j.BasicConfigurator.configure() which by default adds a ConsoleAppender. Maybe should be calling org.apache.log4j.BasicConfigurator.configure(new NullAppender()); to initialize log4j. Net result is all log4j messages get forwarded to jboss logging add also get sent to the default ConsoleAppender which then writes it out stdout which then jboss catches as stdout. So we have 3 custom handlers in our jboss configuration so we get 4 messages to the screen. (1 for real category and 3 for each console appender added). Not sure if this is reported in correct project.